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Pengaruh Penambahan Minyak Kelapa Murni terhadap Sifat Perekat Berbahan Dasar Tepung Tapioka Vincent; Pancasakti, Bima Prasetya; Budhijanto
Jurnal Teknik Kimia USU Vol. 11 No. 1 (2022): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jtk.v11i1.8067

Wood adhesive has significant contribution in the development of furniture industries. Currently, the most widely used type of adhesives is synthetic adhesive which is carcinogenic to humans. This research aimed to develop cassava starch-based bioadhesive. The additive added to the adhesive was virgin coconut oil (VCO) which had antibacterial and antifungal properties. The research method used is quantitative approach where adhesives were made and the properties were analyzed. The steps of making the adhesives included hydrolysis reaction, oxidation, and VCO addition. The reaction was carried out at 70 ℃ and atmospheric pressure for 90 minutes. The amount of VCO added were varied to 0%, 10%, 15%, 20%, 25%, and 30% of the weight of cassava starch. The properties measured were viscosity, solid content, shelf life, shear strength, and the molecular structure of the adhesives. The results showed that the addition of VCO improved the shelf life of the adhesive but weakened the shear strength of the adhesive. The amount of VCO that should be added to improve the adhesive quality is 10% of the weight of cassava starch.

Analisis Kuat Tarik dan Umur Perekat Poliamida Berbasis Gelatin dan Asam Adipat dengan Variasi Jumlah Minyak Sawit sebagai Pemlastis Santosa, Alvin Rizani Ardiansyah; Zain, Anisya Salsabiela; Pancasakti, Bima Prasetya; Budhijanto
Jurnal Teknik Kimia USU Vol. 11 No. 2 (2022): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jtk.v11i2.9115

The adhesive that is widely used today is the synthetic one, which is carcinogenic to humans. It is necessary to produce adhesives based on natural resources (bioadhesive) to reduce the use of synthetic adhesive. Gelatin is a compound that has amine groups, while adipic acid is an organic acid that has carboxylic groups in its chemical structure so they can be primary ingredients to make adhesive. The research objective is to reduce the use of synthetic adhesives with best quality of bioadhesive. The steps of making the adhesives included polymerization reaction and hydrolyzed palm oil addition. The polymerization reaction is carried out in batches at 90 ℃ and 1 atm with mole ratio palm oil to gelatin variety of 0; 0.04; 0.08; 0.17; 0.33; 0.5; and 1. The best result for tensile strength is the ratio of 0.33 mole ratio of palm oil to gelatin for 1 day, 3 days, 7 days, and 14 days of curing time, respectively 1575.71 kPa, 2197.30 kPa, 3387.31 kPa, dan 3708.23 kPa.

Analisis Kuat Geser Perekat Alami Berbahan Soy Protein Isolate dengan Variasi Natrium Sulfit dan Asam Oksalat Koesman, Steven; Budhijanto; Bennet, David; Pancasakti, Bima
Jurnal Teknik Kimia USU Vol. 12 No. 2 (2023): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jtk.v12i2.11929

Along with the technology development, the use of bioadhesive for medical purpose is a common thing. The purpose of this bioadhesive is to give support for the medication because it can be decomposed and ejected by human body. This research aims to analyze the quality of bioadhesive made of soy protein isolate (SPI) as main ingredient. SPI has food-grade level of safety thus it is safe for human body. This bioadhesive is made by two main processes: denaturation of protein dan acid crosslinking. The processes are done under condition of 55 °C dan atmospheric pressure for 30 minutes dan 10 minutes. Shear strength, wet shear strength, viscosity, solid content, and fourier transform infrared spectroscopy (FTIR) analysis were done to find out the impact of oxalic acid addition. The best shear strength result obtained was 1.9051 MPa and wet shear strength result was 1.6093 MPa.

Analisis Pengaruh Penambahan Magnesium Oksida terhadap Sifat Mekanis Bioadhesif Berbasis Kitosan-Karagenan Amanda, Monica Putri; Budhijanto; Ramadhani, Gilang Afif Setya
Jurnal Teknik Kimia USU Vol. 13 No. 1 (2024): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jtk.v13i1.14656

This study investigates the effect of magnesium oxide (MgO) as a filler in enhancing the bioadhesive properties of chitosan and carrageenan-based adhesives. The primary focus is on improving tensile strength, viscosity, solid content, and thermal properties. The results indicate that the addition of 0.75% w/v MgO significantly increased tensile strength from 9.76 kPa to 21.76 kPa and viscosity from 34.26 cP to 617 cP with a 0.5% w/v MgO addition. The solid content also increased from 9.81% to 13.19% with increased MgO concentration. The addition of benzoyl peroxide (BPO) reduced curing time, enhancing process efficiency. Scanning Electron Microscopy and Fourier Transform Infrared Spectroscopy confirmed improvements in structural and chemical stability, while Differential Scanning Calorimetry showed better curing efficiency. This study suggests MgO as a potential filler to improve mechanical properties and adhesion of bioadhesives, relevant for medical applications.

Pengaruh Penambahan Minyak Kelapa Murni terhadap Sifat Perekat Berbahan Dasar Tepung Tapioka Vincent; Pancasakti, Bima Prasetya; Budhijanto
Jurnal Teknik Kimia USU Vol. 11 No. 1 (2022): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Wood adhesive has significant contribution in the development of furniture industries. Currently, the most widely used type of adhesives is synthetic adhesive which is carcinogenic to humans. This research aimed to develop cassava starch-based bioadhesive. The additive added to the adhesive was virgin coconut oil (VCO) which had antibacterial and antifungal properties. The research method used is quantitative approach where adhesives were made and the properties were analyzed. The steps of making the adhesives included hydrolysis reaction, oxidation, and VCO addition. The reaction was carried out at 70 ℃ and atmospheric pressure for 90 minutes. The amount of VCO added were varied to 0%, 10%, 15%, 20%, 25%, and 30% of the weight of cassava starch. The properties measured were viscosity, solid content, shelf life, shear strength, and the molecular structure of the adhesives. The results showed that the addition of VCO improved the shelf life of the adhesive but weakened the shear strength of the adhesive. The amount of VCO that should be added to improve the adhesive quality is 10% of the weight of cassava starch.

Analisis Kuat Tarik dan Umur Perekat Poliamida Berbasis Gelatin dan Asam Adipat dengan Variasi Jumlah Minyak Sawit sebagai Pemlastis Santosa, Alvin Rizani Ardiansyah; Zain, Anisya Salsabiela; Pancasakti, Bima Prasetya; Budhijanto
Jurnal Teknik Kimia USU Vol. 11 No. 2 (2022): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jtk.v11i2.9115

The adhesive that is widely used today is the synthetic one, which is carcinogenic to humans. It is necessary to produce adhesives based on natural resources (bioadhesive) to reduce the use of synthetic adhesive. Gelatin is a compound that has amine groups, while adipic acid is an organic acid that has carboxylic groups in its chemical structure so they can be primary ingredients to make adhesive. The research objective is to reduce the use of synthetic adhesives with best quality of bioadhesive. The steps of making the adhesives included polymerization reaction and hydrolyzed palm oil addition. The polymerization reaction is carried out in batches at 90 ℃ and 1 atm with mole ratio palm oil to gelatin variety of 0; 0.04; 0.08; 0.17; 0.33; 0.5; and 1. The best result for tensile strength is the ratio of 0.33 mole ratio of palm oil to gelatin for 1 day, 3 days, 7 days, and 14 days of curing time, respectively 1575.71 kPa, 2197.30 kPa, 3387.31 kPa, dan 3708.23 kPa.

Analisis Kuat Geser Perekat Alami Berbahan Soy Protein Isolate dengan Variasi Natrium Sulfit dan Asam Oksalat Koesman, Steven; Budhijanto; Bennet, David; Pancasakti, Bima
Jurnal Teknik Kimia USU Vol. 12 No. 2 (2023): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jtk.v12i2.11929

Along with the technology development, the use of bioadhesive for medical purpose is a common thing. The purpose of this bioadhesive is to give support for the medication because it can be decomposed and ejected by human body. This research aims to analyze the quality of bioadhesive made of soy protein isolate (SPI) as main ingredient. SPI has food-grade level of safety thus it is safe for human body. This bioadhesive is made by two main processes: denaturation of protein dan acid crosslinking. The processes are done under condition of 55 °C dan atmospheric pressure for 30 minutes dan 10 minutes. Shear strength, wet shear strength, viscosity, solid content, and fourier transform infrared spectroscopy (FTIR) analysis were done to find out the impact of oxalic acid addition. The best shear strength result obtained was 1.9051 MPa and wet shear strength result was 1.6093 MPa.

Analisis Pengaruh Penambahan Magnesium Oksida terhadap Sifat Mekanis Bioadhesif Berbasis Kitosan-Karagenan Amanda, Monica Putri; Budhijanto; Ramadhani, Gilang Afif Setya
Jurnal Teknik Kimia USU Vol. 13 No. 1 (2024): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jtk.v13i1.14656

This study investigates the effect of magnesium oxide (MgO) as a filler in enhancing the bioadhesive properties of chitosan and carrageenan-based adhesives. The primary focus is on improving tensile strength, viscosity, solid content, and thermal properties. The results indicate that the addition of 0.75% w/v MgO significantly increased tensile strength from 9.76 kPa to 21.76 kPa and viscosity from 34.26 cP to 617 cP with a 0.5% w/v MgO addition. The solid content also increased from 9.81% to 13.19% with increased MgO concentration. The addition of benzoyl peroxide (BPO) reduced curing time, enhancing process efficiency. Scanning Electron Microscopy and Fourier Transform Infrared Spectroscopy confirmed improvements in structural and chemical stability, while Differential Scanning Calorimetry showed better curing efficiency. This study suggests MgO as a potential filler to improve mechanical properties and adhesion of bioadhesives, relevant for medical applications.

Sustainable Hydrogen Production from Oil Palm Trunk Biomass in Indonesia: A Techno-Economic Study Pancasakti, Bima Prasetya; Budhijanto
AGRARIS: Journal of Agribusiness and Rural Development Research Vol. 10 No. 1: January-June 2024
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/agraris.v10i1.152

Hydrogen has been recognized as a global sustainable alternative sustainable energy source. The government of Indonesia has been working on a novel idea to launch the hydrogen industry. Accordingly, research and development of ecologically acceptable hydrogen manufacturing methods are essential. Supercritical water gasification (SCWG) is one of the recent techniques to create hydrogen. This research investigated the techno-economics of hydrogen production in Indonesia using SCWG. Oil palm trunks (OPT), a plentiful byproduct of palm oil plants, are the primary raw materials employed in this industry. This study extracted data from several research publications on SCWG-related hydrogen generation and performed computational analysis using several economic parameter equations. According to the analysis, with a potential OPT source of around 34 million tons, the plant could manufacture 304,166.67 tons of OPT per year, generating 365,000 tons of hydrogen annually. The production cost was projected to be USD 1,179,409,295, with a fixed capital investment of USD 1,178,853,030.47. The expected annual income was USD 1,825,000,000. This assessment yielded an ROI of 60% and an NPV of USD 1,888,889,382.70. The IRR value was 26.96%, with a PoT of 2.49 years. The sensitivity analysis revealed that the price of hydrogen significantly affected the values of IRR and PoT. Therefore, the government must determine the exact price of hydrogen to ensure its sustainability.

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